Rail vehicle

ABSTRACT

A rail vehicle is provided, including: a floor, where an opening portion is formed in the floor, and the opening portion includes a wheel inspection opening and a wheel mounting opening; a wheel, disposed at the wheel mounting opening, where a part of the wheel passes through the wheel mounting opening and protrudes from an upper surface of the floor, and a wheel cover covers an upper side of the wheel; and an inspection floor panel, detachably connected to the wheel inspection opening, where the wheel inspection opening is located on one side of the wheel in a left-right direction of the rail vehicle.

CROSS-REFERENCE TO RELATED APPLICATIONS

The present disclosure claims priority to Chinese Patent Application No. 201910945713.8 filed by BYD Co., Ltd. on Sep. 30, 2019, and entitled “RAIL VEHICLE”.

FIELD

The present disclosure relates to the field of rail transport technologies, and in particular, to a rail vehicle.

BACKGROUND

In the related art, in order to remove or maintain a walking wheel on a straddle-type monorail vehicle, a bogie is first separated from a vehicle body by using a large bogie separation device, and then a wheel change operation is performed under the vehicle body. During operation, the vehicle body and the bogie need to be lifted to be higher than a rail beam surface, to meet a space requirement for changing the wheel. In addition, a large quantity of bundles and pipes connected to the bogie need to be removed and remounted with a large workload and low efficiency.

In some other related arts, a detachable wheel cover that occupies a large space and is heavy is disposed above the walking wheel of the straddle-type monorail vehicle. When the walking wheel is removed or maintained, a wheel cover outer cover and a dustproof cover of the wheel cover need to be first removed, which is complicated in removal steps and takes a long time. Moreover, in order to facilitate the removal of the walking wheel, a floor of the vehicle body has a large space reserved for the walking wheel, and a sound insulation effect needs to be improved.

SUMMARY

An objective of the present disclosure is to at least resolve one of the technical problems in the related art to some extent.

To this end, an objective of the present disclosure is to provide a rail vehicle, to implement daily overhauling and maintenance on a wheel by using a detachable inspection floor panel, which is very convenient, and no access panel is provided on the wheel cover, thereby achieving a good sound insulation effect.

The rail vehicle provided in the embodiments of the present disclosure includes: a floor, where an opening portion is formed in the floor, and the opening portion includes a wheel inspection opening and a wheel mounting opening; a wheel, disposed at the wheel mounting opening, where a part of the wheel passes through the wheel mounting opening and protrudes from an upper surface of the floor, and a wheel cover covers an upper side of the wheel; and an inspection floor panel, detachably connected to the wheel inspection opening, where the wheel inspection opening is located on one side of the wheel in a left-right direction of the rail vehicle.

According to the rail vehicle provided in the embodiments of the present disclosure, an opening portion including a wheel inspection opening and a wheel mounting opening is provided in a floor, a wheel is disposed at the wheel mounting opening, and a detachable inspection floor panel is disposed at the wheel inspection opening, so that daily overhauling and maintenance on the wheel can be implemented by using the inspection floor panel, dustproof and sound insulation effects of a wheel cover can be sufficiently ensured, and the sealing performance of the wheel cover is ensure. In addition, the wheel inspection opening can be made relatively large, thereby facilitating overhauling.

According to some embodiments of the present disclosure, a maximum width of the wheel inspection opening is greater than a diameter of the wheel in a length direction of the floor.

According to some embodiments of the present disclosure, a step structure is disposed on an edge of the floor located at the opening portion, and one side of the inspection floor panel away from the wheel is disposed on the step structure and is flush with the upper surface of the floor.

According to some embodiments of the present disclosure, a sealing member is disposed between the inspection floor panel and the floor.

According to some embodiments of the present disclosure, a seat is disposed on the wheel cover.

According to some embodiments of the present disclosure, a plurality of fixed supports are disposed on a side wall of the opening portion at intervals, the inspection floor panel is supported on upper surfaces of the plurality of fixed supports, and the inspection floor panel is detachably connected to the plurality of fixed supports.

According to some embodiments of the present disclosure, each fixed support includes: a fixed portion, being connected to the side wall of the opening portion; and a support portion, where one end of the support portion is fixedly connected to the top of the fixed portion, the other end of the support portion horizontally extends toward a center of the opening portion, the inspection floor panel is supported on an upper surface of the support portion, and the inspection floor panel is detachably connected to the support portion.

According to some embodiments of the present disclosure, each fixed support further includes: at least one reinforcing rib, being connected between a lower surface of the support portion and a surface on one side of the fixed portion adjacent to the center of the opening portion.

According to some embodiments of the present disclosure, an avoiding opening is formed in the reinforcing rib and the avoiding opening is located at a joint between the support portion and the fixed portion.

According to some embodiments of the present disclosure, the rail vehicle further includes: two wheel removal and mounting floor panels, disposed in the opening portion, where the wheel mounting opening is defined between the two wheel removal and mounting floor panels, the two wheel removal and mounting floor panels are respectively located on two sides of the wheel in a front-rear direction of the rail vehicle, both the two wheel removal and mounting floor panels are detachably connected to the floor, and the wheel cover is connected to the two wheel removal and mounting floor panels.

According to some embodiments of the present disclosure, a central axis of the wheel is lower than the floor.

According to some embodiments of the present disclosure, a thickness of the inspection floor panel is t, and t meets 30 mm≤t≤50 mm.

The additional aspects and advantages of the present disclosure will be provided in the following description, some of which will become apparent from the following description or may be learned from practices of the present disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

The foregoing and/or additional aspects and advantages of the present disclosure will become apparent and comprehensible from the following descriptions of the embodiments with reference to the accompanying drawings, where:

FIG. 1 is a perspective view of a rail vehicle before an inspection floor panel is removed according to an embodiment of the present disclosure.

FIG. 2 is a top view of the rail vehicle shown in FIG. 1 .

FIG. 3 is a perspective view of a rail vehicle after an inspection floor panel is removed according to an embodiment of the present disclosure.

FIG. 4 is an enlarged view of a part A in a circle in FIG. 3 .

FIG. 5 is a top view of the rail vehicle shown in FIG. 3 .

FIG. 6 is another perspective view of the rail vehicle shown in FIG. 1 , where a wheel cover is not shown.

FIG. 7 is an enlarged view of a part B in a circle in FIG. 6 .

FIG. 8 is a main view of the rail vehicle shown in FIG. 6 .

FIG. 9 is an enlarged view of a part C in a circle in FIG. 8 .

FIG. 10 is a side view of a rail vehicle according to an embodiment of the present disclosure, where a wheel cover and a seat are not shown.

FIG. 11 is an enlarged view of a part D in a circle in FIG. 10 .

FIG. 12 is a perspective view in which two inspection floor panels, a wheel cover, and a seat are assembled according to an embodiment of the present disclosure.

FIG. 13 is a side view of two wheel removal and mounting floor panels, the wheel cover, and the seat shown in FIG. 12 .

FIG. 14 is a top view of two wheel removal and mounting floor panels, the wheel cover, and the seat shown in FIG. 12 .

FIG. 15 is a cross-sectional view of a rail vehicle according to an embodiment of the present disclosure.

FIG. 16 is a perspective view in which a wheel cover and a seat are assembled according to an embodiment of the present disclosure.

FIG. 17 is an enlarged view of a part E in a circle in FIG. 16 .

FIG. 18 is a schematic diagram in which a wheel cover and seat assembly and a floor are assembled by using a bolt structure according to an embodiment of the present disclosure.

FIG. 19 is a main view of the rail vehicle shown in FIG. 16 .

FIG. 20 is another main view of the rail vehicle shown in FIG. 16 , where a sealing plate is in an open state.

FIG. 21 is a schematic diagram in which a wheel cover and a sealing plate are assembled according to an embodiment of the present disclosure.

FIG. 22 is a schematic diagram in which the sealing plate and a mounting plate are assembled shown in FIG. 21 .

FIG. 23 is an enlarged view of a part F in a circle in FIG. 22 .

FIG. 24 is a schematic diagram in which the sealing plate and the mounting plate are assembled shown in FIG. 22 from another perspective.

FIG. 25 is a schematic diagram in which the sealing plate and the mounting plate are assembled shown in FIG. 22 from still another perspective.

FIG. 26 is a schematic diagram of a dustproof cover and a wheel cover frame of the wheel cover shown in FIG. 21 , where a wheel cover outer cover is shown.

FIG. 27 is a schematic diagram of a rail vehicle according to an embodiment of the present disclosure.

REFERENCE NUMERALS

-   -   Rail vehicle 100;     -   Floor 1; Opening portion 11; Wheel inspection opening 111; Wheel         mounting opening 112;     -   Side wall 113 of an opening portion;     -   Fixed support 12; Fixed portion 121; Support portion 122;     -   Reinforcing rib 123; Avoiding opening 1231; Sealing member 124;     -   Step structure 13; First upper surface 131; Second upper surface         132;     -   Wheel 2; Wheel cover 3; Dustproof cover 31;     -   Accommodating space 32; Wheel cover mounting opening 33;         Mounting plate 331; Locking structure 332; Elongated hole 3321;     -   Sealing plate 34; Fastener 341; Rod portion 3411; End portion         3412;     -   Wheel cover outer cover 35; Wheel cover frame 36; Dustproof         cover connecting plate 361; Wheel cover outer cover connecting         plate 362;     -   Inspection floor panel 4; Wheel removal and mounting floor panel         5; Seat 6; Wheel cover and seat assembly 7;     -   Bolt structure 8; First connecting member 81; C-shaped groove         811;     -   Second connecting member 82; Bolt connecting plate 821;     -   Bolt 83; and     -   Spacer 201.

DETAILED DESCRIPTION

The embodiments of the present disclosure are described below in detail. Examples of the embodiments are shown in the accompanying drawings, and same or similar reference signs in all the accompanying drawings indicate same or similar components or components having same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present disclosure and cannot be construed as a limitation to the present disclosure.

The following describes a rail vehicle 100 according to the embodiments of the present disclosure with reference to FIG. 1 to FIG. 27 . The rail vehicle 100 is a straddle-type monorail vehicle (not shown in the figure). In the following description of this application, take the railway vehicle 100 as the straddle-type monorail vehicle as an example. Certainly, a person skilled in the art may understand that, the rail vehicle 100 is another type of rail vehicle, which is not limited to the straddle-type monorail vehicle.

As shown in FIG. 1 to FIG. 27 , the rail vehicle 100 according to an embodiment of a first aspect of the present disclosure includes a floor 1, a wheel 2 and an inspection floor panel 4.

Specifically, an opening portion 11 is formed in the floor 1, and the opening portion 11 includes a wheel inspection opening 111 and the wheel mounting opening 112. For example, in examples of FIG. 1 to FIG. 12 , the floor 1 extends in a horizontal direction, the opening portion 11 may run through the floor 1 in an up-down direction, and the wheel inspection opening 111 and the wheel mounting opening 112 are in communication with each other. In this case, the wheel inspection opening 111 and the wheel mounting opening 112 may be understood as different regions of the opening portion 11.

The wheel 2 is disposed at the wheel mounting opening 112, and a part of the wheel 2 passes through the wheel mounting opening 112 and protrudes from an upper surface of the floor 1. The wheel 2 is disposed at the wheel mounting opening 112 through penetration, an upper part of the wheel 2 is located above the floor 1, and a lower part of the wheel 2 is located below the floor 1. Therefore, by disposing the wheel 2 at the wheel mounting opening 112 through penetration, when the rail vehicle 100 is a straddle-type monorail vehicle, a relatively space in a compartment is not occupied, and the entire height of the rail vehicle such as the straddle-type monorail vehicle can be relatively reduced, thereby improving driving safety of the rail vehicle such as the straddle-type monorail vehicle. The wheel 2 may be a walking wheel of the rail vehicle such as the straddle-type monorail vehicle. A wheel cover 3 covers an upper side of the wheel 2.

The inspection floor panel 4 is detachably connected to the wheel inspection opening 111. Therefore, after the inspection floor panel 4 is removed, the wheel 2 may be overhauled by using the wheel inspection opening 111. Specifically, when the wheel 2 needs to be overhauled, for example, daily tire pressure detection, tire inflation and deflation, and pattern depth measurement are performed on the wheel 2 such as a walking wheel, the inspection floor panel 4 may be removed from the floor 1, and the wheel inspection opening 111 is exposed. In this case, the wheel 2 in the wheel mounting opening 112 may be viewed and operated through the wheel inspection opening 111, to overhaul and maintain the wheel 2. Compared with a conventional manner in which access panels are respectively disposed on a wheel cover outer cover and a dustproof cover, in the manner, for example, when the wheel cover 3 includes the wheel cover outer cover 35 and the dustproof cover 31, no access panel needs to be disposed on the wheel cover outer cover 35 and the dustproof cover 31, so that the dustproof and sound insulation effects of the dustproof cover 31 can be ensured. In addition, the inspection floor panel 4 can be made large, to increase an overhauling space (that is, the wheel inspection opening 111) for the wheel 2, thereby facilitating the daily overhauling and maintenance on the wheel 2.

Referring to FIG. 3 and FIG. 4 , the wheel inspection opening 111 is located on one side of the wheel 2 in a left-right direction of the rail vehicle 100. This arrangement is convenient for maintenance personnel to perform operations such as tire pressure detection, tire inflation and deflation, and pattern depth measurement on the wheel 2 such as the walking wheel in the wheel inspection opening 111.

According to the rail vehicle 100 provided in the embodiments of the present disclosure, an opening portion 11 including a wheel inspection opening 111 and a wheel mounting opening 112 is provided in a floor 1, a wheel 2 is disposed at the wheel mounting opening 112, and a detachable inspection floor panel 4 is disposed at the wheel inspection opening 111, so that daily overhauling and maintenance on the wheel 2 can be implemented by using the inspection floor panel 4, dustproof and sound insulation effects of the wheel cover 3 can be sufficiently ensured, and the sealing performance of the wheel cover is ensure. In addition, the wheel inspection opening 111 can be made relatively large, thereby facilitating overhauling.

Optionally, a width of the wheel inspection opening 111 is greater than a diameter of the wheel 2 in a length direction of the floor 1, and a size of the wheel inspection opening 111 is relatively large, so that daily overhauling and maintenance on the wheel 2 can be more convenient.

Optionally, a central axis of the wheel 2 is lower than the upper surface of the floor 1. In this case, the central axis of the wheel 2 is located below a horizontal plane of the floor 1. A size of a part of the wheel 2 located above the floor 1 is less than a size of a part of the wheel located below the floor 1. Therefore, the part of the wheel 2 such as a walking wheel protruding from the floor 1 is relatively small, so that a relatively low floor 1 is implemented and a proportion of a passenger space occupied by the protruding part of the walking wheel is reduced, to improve the comfort of seat.

According to some embodiments of the present disclosure, as shown in FIG. 1 to FIG. 3 , FIG. 5 , FIG. 8 , and FIG. 9 , a step structure 13 is disposed on an edge of the floor 1 located at the opening portion 11, and one side of the inspection floor panel 4 away from the wheel 2 is disposed on the step structure 13 and an upper surface of the inspection floor panel 4 is flush with the upper surface of the floor 1. For example, the step structure 13 may include a first upper surface 131 and a second upper surface 132 that are not located on a same plane. The first upper surface 131 is higher than the second upper surface 132 and the first upper surface 131 is located on one side of the second upper surface 132 away from the wheel 2. During mounting, a part of the inspection floor panel 4 extends to an upper side of the second upper surface 132 and matches the second upper surface 132, and the upper surface of the inspection floor panel 4 is flush with the first upper surface 131. Therefore, it can be effectively ensured that the entire floor 1 is located on the same plane.

According to further embodiments of the present disclosure, referring to FIG. 8 and FIG. 9 , a sealing member 124 is disposed between the inspection floor panel 4 and the floor 1. For example, in examples of FIG. 8 and FIG. 9 , one side of each inspection floor panel 4 away from the wheel 2 extends to the upper side of the floor 1 such as the second upper surface 132. The sealing member 124 is disposed between a lower surface of one side of each inspection floor panel 4 away from the wheel 2 and the second upper surface 132 of the floor 1. With such arrangement, one side of each inspection floor panel 4 away from the wheel 2 may be propped to the floor 1, noise transmission can be reduced, and mounting of the sealing member 124 is facilitated. Because the sealing member 124 may seal a gap between the inspection floor panel 4 and the floor 1, noise from a lower vehicle body of the rail vehicle such as the straddle-type monorail vehicle can be effectively isolated.

Optionally, the sealing member 124 is a sealing rubber member. For example, the sealing member 124 may be a sealing rubber pad. Due to elasticity, a rubber structure can better seal the gap between the inspection floor panel 4 and the floor 1, to achieve a good sound insulation effect. However, the present disclosure is not limited thereto.

According to some embodiments of the present disclosure, referring to FIG. 1 to FIG. 3 , FIG. 5 , and FIG. 12 to FIG. 14 , a seat 6 is disposed on the wheel cover 3. The seat 6 is configured for a passenger to sit. Such arrangement effectively utilizes a space occupied by the wheel 2 protruding from the floor 1. Specifically, for example, in examples of FIG. 1 to FIG. 3 , FIG. 5 , and FIG. 12 to FIG. 14 , the seat 6 is fixedly connected to the top of the wheel cover 3, the wheel cover 3 covers an upper side of the wheel 2, and the wheel cover 3 and the seat 6 are detachably connected to the floor 1 as a whole. In this case, the wheel cover 3 and the seat 6 may be an integrated structure, and the seat 6 and the wheel cover 3 may be integrally formed. Certainly, the seat 6 and the wheel cover 3 may alternatively be separately processed and formed and then connected as a whole through welding or the like. Therefore, the wheel cover 3 is designed to be compatible with the seat 6, and the wheel cover 3 and the seat 6 as a whole can simultaneously protect the wheel 2 and allow passengers to take. When requiring to be mounted or removed, the wheel cover 3 and the seat 6 only need to be mounted on the floor 1 or removed from the floor 1 as a whole. Compared with a conventional manner of requiring to first remove the seat and then remove the wheel cover, the manner is convenient in removal and is time-saving and labor-saving without a problem of destroying a mounting structure between the seat and the wheel cover and can implement mounting and removal of the wheel 2 in a compartment.

Further, as shown in FIG. 4 and FIG. 15 , an accommodating space 32 with the bottom being open and concave upward is formed on the wheel cover 3, and the accommodating space 32 is configured to accommodate a part of the wheel 2. Therefore, a part of the wheel 2 protruding from an upper surface of the floor 1 may be well covered by the wheel cover 3.

Optionally, referring to FIG. 15 , a top wall of the accommodating space 32 is formed as an arc-shaped wall adapted to the shape of the wheel 2. For example, the wheel cover 3 is formed as an upwardly protruding arch-shaped structure, which is preferably adapted to the shape of the wheel 2. With this arrangement, it is ensured that the part of the wheel 2 can be well accommodated in the accommodating space 32, and the space occupied by the wheel cover 3 in the compartment can be relatively reduced.

Certainly, the present disclosure is not limited thereto. The wheel cover 3 may further be formed in the form of seat 6 (not shown in the figure). For example, the wheel cover 3 and the seat 6 as a whole may also be formed as a seat 22 in an upper part, and the bottom of the wheel cover 3 and the seat 6 as a whole is provided with an upwardly concave portion, where a part of the wheel 2 is located in the concave portion. Specifically, the wheel cover 3 may include a seat part and a backrest part. The seat part covers the upper side of the wheel 2, the concave portion for accommodating the part of the wheel 2 is formed on the bottom of the seat part, a top surface of the seat part is a horizontal plane for the passenger to sit, and the backrest part extends upward from the top surface of the seat part for the passenger to recline. The wheel cover 3 may be a hollow structure with the bottom being open. In this case, the concave portion below the wheel cover 3 is configured to accommodate the part of the wheel 2 protruding from the upper surface of the floor 1, and an upper part of the wheel cover 3 is for the passenger to directly sit. With this arrangement, the wheel cover 3 can be made relatively small and has a light weight.

Optionally, as shown in FIG. 16 to FIG. 20 , the wheel cover 3 and the seat 6 are collectively referred to as a wheel cover and seat assembly 7 as a whole. The wheel cover and seat assembly 7 is detachably connected to the floor 1 by a bolt structure 8. Therefore, removal and mounting are convenient, and the connection through the bolt structure 8 is reliable, which is suitable for mass production and low in cost.

Further, referring to FIG. 16 to FIG. 20 , the bolt structure 8 is located in the wheel cover and seat assembly 7. A wheel cover mounting opening 33 is formed in a lower portion of the wheel cover and seat assembly 7. A detachable sealing plate 34 is disposed at the wheel cover mounting opening 33. Herein, it should be noted that, a direction “inside” may be understood as a direction toward an inner center of the wheel cover and seat assembly 7, and a direction opposite to the “inside” is defined as “outside”, that is, a direction away from the inner center of the wheel cover and seat assembly 7. With this arrangement, the bolt structure 8 may be well hidden inside the wheel cover and seat assembly 7, to ensure the compactness of the entire rail vehicle 100. During removal and mounting, a sealing plate 34 at the wheel cover mounting opening 33 may be opened, to tighten or loosen the bolt structure 8. Optionally, the wheel cover mounting opening 33 is adjacent to the bolt structure 8, to facilitate removal and mounting of the bolt structure 8.

Specifically, as shown in FIG. 21 to FIG. 26 , the sealing plate 34 may be fixedly connected to at least one fastener 341. The fastener 341 includes a rod portion 3411 and an end portion 3412, where one end of the rod portion 3411 is connected to the sealing plate 34 and the end portion 3412 is connected to the other end of the rod portion 3411. A maximum size of the end portion 3412 in a cross section of the rod portion 3411 is greater than a maximum size of the rod portion 3411 in the cross section of the rod portion 3411, and the end portion 3412 may be formed as a long strip shape. At least one mounting plate 331 is disposed at a position of the wheel cover and seat assembly 7 corresponding to the wheel cover mounting opening 33, a locking structure 332 is disposed on the mounting plate 331, and an elongated hole 3321 adapted to a shape of the end portion 3412 is formed in the locking structure 332. During mounting, after passing through the elongated hole 3321 on the locking structure 332 on the mounting plate 331, the end portion 3412 of the fastener 341 on the sealing plate 34 rotates by a specific angle. In this case, the end portion 3412 is staggered with the elongated hole 3321 on the locking structure 332, to reliably mount the sealing plate 34 at the wheel cover mounting opening 33. During removal, only the fastener 341 needs to be rotated, so that the end portion 3412 of the fastener is aligned with the elongated hole 3321 of the locking structure 332. Subsequently, the sealing plate 34 is removed outward. In this case, the fastener 341 is withdrawn from the elongated hole 3321 of the locking structure 332 and the mounting plate 331.

Certainly, the bolt structure 8 may also be located outside the wheel cover and seat assembly 7. A groove with the top being open is formed in the floor 1, the bolt structure 8 is located in the groove, and a detachable cover plate (not shown in the figure) is disposed on the top of the groove. Therefore, the bolt structure 8 is arranged outside the wheel cover and seat assembly 7, to facilitate removal and mounting. Disposing of the cover plate allows the bolt structure 8 to be well hidden below the cover plate, which can similarly ensure the aesthetics of the entire rail vehicle 100.

It can be understood that the sealing plate 34 and the cover plate may further be pivotally connected to a corresponding position by a hinge structure or the like, or may be clamped through a buckle structure or the like. However, the present disclosure is not limited thereto.

Specifically, referring to FIG. 16 , FIG. 17 , and FIG. 18 , the bolt structure 8 includes: a first connecting member 81, a second connecting member 82, and at least one bolt 83. The first connecting member 81 is disposed on the floor 1, a C-shaped groove 811 with the top being open is formed in the first connecting member 81, at least one threaded connector (not shown in the figure) is disposed in the C-shaped groove 811, the second connecting member 82 is disposed on the wheel cover and seat assembly 7, a bolt connecting plate 821 is disposed at a free end of the second connecting member 82, the bolt connecting plate 821 is supported on a top surface of the first connecting member 81, and the bolt 83 runs through the bolt connecting plate 821 and is in threaded connection with the threaded connector. When requiring to be mounted or removed, the entire wheel cover and seat assembly 7 is removed. Specifically, the wheel cover and seat assembly 7 is fixed to the C-shaped groove 811 of the first connecting member 81 on the floor 1 by using the bolt 83. When the wheel cover and seat assembly 7 needs to be removed, the sealing plate 34 or the cover plate is first removed, and then the bolt 83 such as a fastening bolt is loosened, so that the entire wheel cover and seat assembly 7 is removed. A mounting process is opposite to the removal process. Therefore, by using the C-shaped groove 811, the accuracy of positioning the bolt 83 and the threaded connector can be improved, and the assembly efficiency is improved. When a plurality of threaded connectors are disposed in the C-shaped groove 811, the threaded connectors may be nuts fixed to the C-shaped groove 811 or movable in the C-shaped groove 811. In this case, machining precision of a plurality of bolt connecting plates 821 can be reduced, and the costs can be saved.

For example, when the threaded connector in the C-shaped groove 811, for example, the nut in the C-shaped groove 811, is movable, during mounting and removal of the wheel cover and seat assembly 7, the wheel cover and seat assembly 7 may move leftward and rightward along the C-shaped groove 811. When an assembly error exists, the assembly error can be reduced by moving the wheel cover and seat assembly 7 leftward and rightward, so that the wheel cover and seat assembly 7 is easy to remove. In addition, as shown in FIG. 27 , when a positioning destination of the wheel cover and seat assembly 7 is a spacer 201 in the rail vehicle such as the straddle-type monorail vehicle, after the wheel cover and seat assembly 7 is mounted in the C-shaped groove 811, the wheel cover and seat assembly 7 may be pushed toward the spacer 201, so that the wheel cover and seat assembly 7 is seamlessly propped to the spacer 201. When the wheel cover and seat assembly 7 needs to be removed, the wheel cover and seat assembly 7 is pushed away from the spacer 201, so that the wheel cover and seat assembly 7 is removed.

As shown in FIG. 21 and FIG. 26 , the wheel cover 3 includes a dustproof cover 31 and a wheel cover outer cover 35. The dustproof cover 31 covers the wheel 2, and the wheel cover outer cover 35 covers the dustproof cover 31. Specifically, for example, the wheel cover outer cover 35 may be fixedly connected to the dustproof cover 31 by a wheel cover frame 36. A plurality of wheel cover outer cover connecting plates 362 may be disposed on the top of the wheel cover frame 36, the wheel cover frame 36 is fixedly connected to the wheel cover outer cover 35 by using a bolt by the plurality of wheel cover outer cover connecting plates 362, a plurality of dustproof cover connecting plates 361 may be disposed on the bottom of the wheel cover frame 36, and the wheel cover frame 36 is fixedly connected to the dustproof cover 31 by using a bolt by the plurality of dustproof cover connecting plates 361. In this way, the dustproof cover 31 and the wheel cover outer cover 35 may be connected as a whole. In this case, the dustproof cover 31 and the wheel cover outer cover 35 are an integrated structure. During removal, the dustproof cover 31 and the wheel cover outer cover 35 are removed as a whole.

According to some embodiments of the present disclosure, as shown in FIG. 3 , FIG. 4 , and FIG. 6 to FIG. 12 , a plurality of fixed supports 12 are disposed on a side wall 113 of the opening portion 11 at intervals, the inspection floor panel 4 is supported on upper surfaces of the plurality of fixed supports 12, and the inspection floor panel 4 is detachably connected to the plurality of fixed supports 12. With this arrangement, the fixed support 12 can reliably support the inspection floor panel 4 with a high strength, thereby ensuring standing safety for passengers.

Specifically, as shown in FIG. 3 , FIG. 4 , and FIG. 6 to FIG. 11 , each fixed support 12 includes: a fixed portion 121 and a support portion 122. The fixed portion 121 is connected to the side wall 113 of the opening portion 11, one end of the support portion 122 is fixedly connected to the top of the fixed portion 121, and the other end of the support portion 122 horizontally extends toward a center of the opening portion 11. The inspection floor panel 4 is supported on an upper surface of the support portion 122, and the inspection floor panel 4 is detachably connected to the support portion 122. For example, in examples of FIG. 4 , FIG. 7 , and FIG. 10 , both the fixed portion 121 and the support portion 122 may be plate-shaped structures, the fixed portion 121 and the support portion 122 are generally L-shaped as a whole, and the fixed portion 121 and the support portion 122 may be processed and formed as a whole. For example, the fixed portion 121 and the support portion 122 may be formed by bending a flat plate, and the fixed portion 121 may be detachably connected to the side wall 113 of the opening portion 11 by a bolt or the like, so that the entire fixed support 12 is fixed to the floor 1, thereby achieving convenient mounting and a reliable connection. The upper surface of the support portion 122 can support the inspection floor panel 4, and the horizontal support portion 122 facilitates connection between the support portion and the inspection floor panel 4, so that the assembly efficiency can be improved.

For example, as shown in FIG. 1 to FIG. 5 , the inspection floor panel 4 is supported and fixed by three fixed supports 12, and the three fixed supports 12 are spaced apart in a circumferential direction of the opening portion 11. Herein, the three fixed supports 12 are for the purpose of exemplary description. However, after reading the technical solution of this application, a person of ordinary skill can obviously understand that the solution is applied to the technical solution of another quantity of fixed supports 12, which also falls within the protection scope of the present disclosure.

Optionally, referring to FIG. 4 , FIG. 8 , and FIG. 9 , the upper surface of the support portion 122 is lower than the upper surface of the floor 1 and a distance between the upper surface of the support portion 122 and the upper surface of the floor 1 is substantially equal to a thickness of the inspection floor panel 4 In this case, the upper surface of the support portion 122 is lower than the upper surface of the floor 1, and after the inspection floor panel 4 is mounted on the fixed support 12, an upper surface of the inspection floor panel 4 may be flush with the upper surface of the floor 1.

Optionally, as shown in FIG. 4 , a width of the support portion 122 of the fixed support 12 is greater than half of a width of the wheel removal and mounting floor panel 5. In this way, the floor panel can be supported more reliably. Similarly, to improve the stability of the support for the wheel removal and mounting floor panel 5, one end of the wheel removal and mounting floor panel 5 may further be configured in a curved edge or a bevel, as shown in FIG. 4 .

Further, as shown in FIG. 4 , FIG. 7 , and FIG. 9 , each fixed support 12 further includes: at least one reinforcing rib 123. The reinforcing rib 123 is connected between a lower surface of the support portion 122 and a surface on one side of the fixed portion 121 adjacent to the center of the opening portion 11. Therefore, by disposing the reinforcing rib 123, a structural strength of the fixed support 12 can be improved. Optionally, the reinforcing rib 123 may be a plate-shaped structure. Certainly, the reinforcing rib 123 may alternatively be a rod-shaped structure (not shown in the figure). However, the present disclosure is not limited thereto.

According to some embodiments of the present disclosure, referring to FIG. 8 and FIG. 9 , an avoiding opening 1231 is formed in the reinforcing rib 123, and the avoiding opening 1231 is located at a joint between the support portion 122 and the fixed portion 121. For example, in an example of FIG. 9 , the avoiding opening 1231 may be a triangular notch. In this case, a gap exists between the reinforcing rib 123 and the corresponding joint between the support portion 122 and the fixed portion 121. Such arrangement can avoid stress concentration on the joint between the support portion 122 and the fixed portion 121 and improve the support reliability of the fixed support 12.

Optionally, the inspection floor panel 4 is connected to the support portion 122 by a bolt. Therefore, removal and mounting are convenient, the bolt structure is simple, the connection is reliable, and the costs are low.

Optionally, the plurality of fixed supports 12 are aluminum members. However, the present disclosure is not limited thereto.

Optionally, referring to FIG. 11 , the thickness of each inspection floor panel 4 is t, and t meets 30 mm≤t≤50 mm. Therefore, the thickness t is set to meet 30 mm≤t≤50 mm, it is ensured that a strength requirement of the rail vehicle such as the straddle-type monorail vehicle on the floor 1 is met and the costs can be saved. For example, when the thickness t is less than 30 mm, the thickness of the inspection floor panel 4 is relatively small, which may not meet the strength requirement of the rail vehicle such as the straddle-type monorail vehicle on the floor 1, that is, deformation or cracking may occur when a plurality of passengers stands on the floor, easily resulting in a safety hazard. When the thickness t is greater than 50 mm, the thickness of the inspection floor panel 4 is relatively large. In this case, the entire inspection floor panel 4 is heavy, and the costs are high. Further, optionally, the thickness t meets: t=30 mm.

Optionally, both the two inspection floor panels 4 are aluminum or steel. An aluminum material and a steel material can meet the strength requirement well, and the two materials are widely used with relatively low costs. In addition, the weight of the aluminum material is relatively light, which can meet the lightweight design. However, the present disclosure is not limited thereto.

According to some embodiments of the present disclosure, referring to FIG. 1 to FIG. 5 , the rail vehicle 100 further includes: two wheel removal and mounting floor panels 5, disposed in the opening portion 11, where the wheel mounting opening 112 is defined between the two wheel removal and mounting floor panels 5, the two wheel removal and mounting floor panels 5 are respectively located on two sides of the wheel 2 in a front-rear direction of the rail vehicle 100, both the two wheel removal and mounting floor panels 5 are detachably connected to the floor 1, and the wheel cover 3 is connected to the two wheel removal and mounting floor panels 5. Therefore, an area of the entire floor 1 is increased, and by fixing the wheel cover 3 to the two wheel removal and mounting floor panels 5, a volume of the wheel cover 3 is reduced and a weight and an occupied space of the wheel cover 3 are reduced, thereby implementing mounting of a small wheel cover 3 and relatively increasing a space for a passenger. When the rail vehicle 100 is a straddle-type monorail vehicle, in a case of a same quantity of passengers, this solution can reduce a length of the entire vehicle, reduce a weight of the entire vehicle, and further improve the performance of the entire vehicle. In addition, distances between the wheel 2 and the two wheel removal and mounting floor panels 5 are relatively short, and a wheel 2 space reserved on a vehicle body of the rail vehicle such as the straddle-type monorail vehicle may be reduced, so that noise in the vehicle can be reduced, thereby improving the comfort of seat for passengers.

When the wheel 2 needs to be removed, the wheel cover 3 may be first removed, and then the two wheel removal and mounting floor panels 5 are removed. After a sufficient space for removing the wheel 2 is reserved, the wheel 2 is removed finally. Conversely, when the wheel 2 is mounted, the wheel 2 may be first mounted, then the two wheel removal and mounting floor panels 5 are mounted, and finally the wheel cover 3 is mounted. Therefore, the wheel 2 can be removed and mounted in the vehicle. Compared with a conventional manner of changing a wheel outside the vehicle, the manner of removing and mounting the wheel in the vehicle is convenient in removal and mounting and is time-saving and labor-saving.

Optionally, a distance between the two wheel removal and mounting floor panels 5 is less than the diameter of the wheel 2 in a length direction of the floor 1. Such arrangement can further increase the area of the entire floor 1 and reduce the size of the part of the wheel 2 protruding from the floor 1, so that the occupied space of the wheel cover 3 is further reduced and the weight of the wheel cover 3 is further reduced. Therefore, the wheel space reserved on the vehicle body is further reduced, the noise in the vehicle is further reduced, and the structure of the entire rail vehicle such as the straddle-type monorail vehicle can be more compact, thereby further improving the performance of the rail vehicle such as the straddle-type monorail vehicle.

Further, a maximum width of the opening portion 11 is greater than the diameter of wheels 2 in the length direction of the floor 1. A width of the opening portion 11 is greater than the diameter of wheel 2 in the length direction of the floor 1. Therefore, after the two wheel removal and mounting floor panels 511 are removed, the wheel 2 can be further conveniently removed in the vehicle. Optionally, a longitudinal width of the opening portion 11 is greater than the diameter of the wheel 2 by at least 100 mm or more. Because the wheel 2 has a large weight, which is about 200 kg, the wheel 2 has a shaking amount when the wheel 2 is removed, and such arrangement better facilitates removal of the wheel 2.

According to further embodiments of the present disclosure, referring to FIG. 4 , each wheel removal and mounting floor panel 5 may be mounted at the opening portion 11 by using at least one fixed support 12. Further, as shown in FIG. 4 , some fixed supports 12 can support both the inspection floor panel 4 and the wheel removal and mounting floor panel 5. In this way, a quantity of fixed supports 12 can be reduced, and the inspection floor panel 4 and the wheel removal and mounting floor panel 5 can be more tightly and neatly connected.

Still further, to reduce noise transmission, a sealing member 124 may also be disposed between the wheel removal and mounting floor panel 5 and the floor 1, and the sealing member 124 may be disposed between a lower surface of the wheel removal and mounting floor panel 5 and the upper surface of the floor 1, as shown in FIG. 10 and FIG. 11 .

According to the rail vehicle such as the straddle-type monorail vehicle provided in the embodiments of the present disclosure, by using the rail vehicle 100, no access panel needs to be proved on the dustproof cover 31 and the wheel cover outer cover 35, so that the sealing performance is better, and dustproof and sound insulation are achieved. In addition, the wheel 2 can be overhauled by using the inspection floor panel 4, which is very convenient and is suitable for a vehicle with a small wheel cover, so that the entire performance of the rail vehicle such as the straddle-type monorail vehicle is improved.

Other configurations and operations of the rail vehicle such as the straddle-type monorail vehicle according to the embodiments of the present disclosure are known to those of ordinary skill in the art, and are not described in detail herein.

In the description of the present disclosure, it should be understood that, orientations or position relationships indicated by terms such as “center”, “longitudinal”, “transverse”, “length”, “width”, “thickness”, “up”, “down”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “counterclockwise”, “axial”, “radial”, and “circumferential” are orientations or position relationships shown based on the accompanying drawings, and are used only for ease of describing the present disclosure and simplifying the description, rather than indicating or implying that the apparatus or element should have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be construed as a limitation on the present disclosure.

In addition, terms “first” and “second” are used merely for the purpose of description, and shall not be construed as indicating or implying relative importance or implying a quantity of indicated technical features. Therefore, features defining “first” and “second” may explicitly or implicitly include one or more such features. In the description of the present disclosure, the meaning of “plurality of” is two or more, unless specifically defined otherwise.

In the present disclosure, it should be noted that unless otherwise explicitly specified and limited, the terms “mount”, “connect”, “connection”, and “fix” should be understood in a broad sense. For example, a connection may be a fixed connection, a detachable connection, or an integral connection; or the connection may be a mechanical connection or an electrical connection; a direct connection, an indirect connection through an intermediate, or internal communication between two elements or an interaction relationship between two elements. The specific meanings of the above terms in the present disclosure may be understood according to specific circumstances for those ordinary skill in the art.

In the present disclosure, unless otherwise explicitly specified or defined, the first feature being located “above” or “below” the second feature may be the first feature being in direct contact with the second feature, or the first feature being in indirect contact with the second feature through an intermediate medium. In addition, that the first feature is “above”, “over”, or “on” the second feature may indicate that the first feature is directly above or obliquely above the second feature, or may merely indicate that the horizontal position of the first feature is higher than that of the second feature. That the first feature is “below”, “under”, and “beneath” the second feature may be that the first feature is directly below or obliquely below the second feature, or may merely indicate that the horizontal position of the first feature is lower than that of the second feature.

In the description of this specification, the description of the reference terms “an embodiment”, “some embodiments”, “an example”, “a specific example”, “some examples,” and the like means that specific features, structures, materials or characteristics described in combination with the embodiment(s) or example(s) are included in at least one embodiment or example of the present disclosure. In this specification, exemplary descriptions of the foregoing terms do not necessarily refer to a same embodiment or example. Besides, the specific features, the structures, the materials or the characteristics that are described may be combined in proper manners in any one or more embodiments or examples. In addition, a person skilled in the art may integrate or combine different embodiments or examples described in the specification and features of the different embodiments or examples as long as they are not contradictory to each other.

Although the embodiments of the present disclosure have been shown and described above, it can be understood that, the foregoing embodiments are exemplary and should not be understood as limitation to the present disclosure. A person of ordinary skill in the art can make changes, modifications, replacements, or variations to the foregoing embodiments within the scope of the present disclosure. 

What is claimed is:
 1. A rail vehicle, comprising: a floor, wherein an opening portion is formed in the floor, and the opening portion comprises a wheel inspection opening and a wheel mounting opening; a wheel, disposed at the wheel mounting opening, wherein a part of the wheel passes through the wheel mounting opening and protrudes from an upper surface of the floor; a wheel cover, covering an upper side of the wheel; and an inspection floor panel, detachably connected to the wheel inspection opening, wherein the wheel inspection opening is located on one side of the wheel in a left-right direction of the rail vehicle.
 2. The rail vehicle according to claim 1, wherein a maximum width of the wheel inspection opening is greater than a diameter of the wheel in a length direction of the floor.
 3. The rail vehicle according to claim 1, wherein a central axis of the wheel is lower than the upper surface of the floor.
 4. The rail vehicle according to claim 1, wherein a step structure is disposed on an edge of the floor located at the opening portion, and one side of the inspection floor panel away from the wheel is disposed on the step structure and is flush with the upper surface of the floor.
 5. The rail vehicle according to claim 1, wherein a sealing member is disposed between the inspection floor panel and the floor.
 6. The rail vehicle according to claim 1, wherein a seat is disposed on the wheel cover.
 7. The rail vehicle according to claim 1, wherein a plurality of fixed supports are disposed on a side wall of the opening portion at intervals, the inspection floor panel is supported on upper surfaces of the plurality of fixed supports, and the inspection floor panel is detachably connected to the plurality of fixed supports.
 8. The rail vehicle according to claim 7, wherein each fixed support comprises: a fixed portion, connected to the side wall of the opening portion; a support portion, wherein one end of the support portion is fixedly connected to the top of the fixed portion, the other end of the support portion horizontally extends toward a center of the opening portion, the inspection floor panel is supported on an upper surface of the support portion, and the inspection floor panel is detachably connected to the support portion.
 9. The rail vehicle according to claim 8, wherein each fixed support further comprises: at least one reinforcing rib, being connected between a lower surface of the support portion and a surface on one side of the fixed portion adjacent to the center of the opening portion.
 10. The rail vehicle according to claim 9, wherein an avoiding opening is formed in the reinforcing rib and the avoiding opening is located at a joint between the support portion and the fixed portion.
 11. The rail vehicle according to claim 1, further comprising: two wheel removal and mounting floor panels, disposed in the opening portion, wherein the wheel mounting opening is defined between the two wheel removal and mounting floor panels, the two wheel removal and mounting floor panels are respectively located on two sides of the wheel in a front-rear direction of the rail vehicle, both the two wheel removal and mounting floor panels are detachably connected to the floor, and the wheel cover is connected to the two wheel removal and mounting floor panels.
 12. The rail vehicle according to claim 1, wherein a thickness of the inspection floor panel is t, and t meets 30 mm≤t≤50 mm.
 13. The rail vehicle according to claim 2, wherein a central axis of the wheel is lower than the upper surface of the floor.
 14. The rail vehicle according to claim 13, wherein a step structure is disposed on an edge of the floor located at the opening portion, and one side of the inspection floor panel away from the wheel is disposed on the step structure and is flush with the upper surface of the floor.
 15. The rail vehicle according to claim 14, wherein a sealing member is disposed between the inspection floor panel and the floor.
 16. The rail vehicle according to claim 15, wherein a seat is disposed on the wheel cover.
 17. The rail vehicle according to claim 16, wherein a plurality of fixed supports are disposed on a side wall of the opening portion at intervals, the inspection floor panel is supported on upper surfaces of the plurality of fixed supports, and the inspection floor panel is detachably connected to the plurality of fixed supports.
 18. The rail vehicle according to claim 17, wherein each fixed support comprises: a fixed portion, connected to the side wall of the opening portion; a support portion, wherein one end of the support portion is fixedly connected to the top of the fixed portion, the other end of the support portion horizontally extends toward a center of the opening portion, the inspection floor panel is supported on an upper surface of the support portion, and the inspection floor panel is detachably connected to the support portion.
 19. The rail vehicle according to claim 18, wherein each fixed support further comprises: at least one reinforcing rib, being connected between a lower surface of the support portion and a surface on one side of the fixed portion adjacent to the center of the opening portion.
 20. The rail vehicle according to claim 19, wherein an avoiding opening is formed in the reinforcing rib and the avoiding opening is located at a joint between the support portion and the fixed portion. 